FI925956A - Apparatus for tuning / matching a filter filter and a method for performing separation measurement - Google Patents

Apparatus for tuning / matching a filter filter and a method for performing separation measurement Download PDF

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Publication number
FI925956A
FI925956A FI925956A FI925956A FI925956A FI 925956 A FI925956 A FI 925956A FI 925956 A FI925956 A FI 925956A FI 925956 A FI925956 A FI 925956A FI 925956 A FI925956 A FI 925956A
Authority
FI
Finland
Prior art keywords
filter
combiner
pct
measuring
tuning
Prior art date
Application number
FI925956A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI94690B (en
FI925956A0 (en
FI94690C (en
Inventor
Pekka Heikkilae
Eero Koukkari
Seppo Nousiainen
Juha Vasanoja
Martti Kainulainen
Jukka Kylloenen
Teuvo Haukipuro
Esa Niemitalo
Harri Tikka
Original Assignee
Nokia Telecommunications Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Publication of FI925956A0 publication Critical patent/FI925956A0/en
Priority to FI925956A priority Critical patent/FI94690C/en
Priority to JP06515712A priority patent/JP3078839B2/en
Priority to PCT/FI1993/000567 priority patent/WO1994016497A1/en
Priority to AT94902794T priority patent/ATE170346T1/en
Priority to EP94902794A priority patent/EP0647373B1/en
Priority to US08/295,665 priority patent/US5525940A/en
Priority to AU57013/94A priority patent/AU674375B2/en
Priority to DE69320636T priority patent/DE69320636T2/en
Publication of FI925956A publication Critical patent/FI925956A/en
Priority to NO943192A priority patent/NO306889B1/en
Publication of FI94690B publication Critical patent/FI94690B/en
Application granted granted Critical
Publication of FI94690C publication Critical patent/FI94690C/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/46—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies

Abstract

PCT No. PCT/FI93/00567 Sec. 371 Date Oct. 25, 1994 Sec. 102(e) Date Oct. 25, 1994 PCT Filed Dec. 29, 1993 PCT Pub. No. WO94/16497 PCT Pub. Date Jul. 21, 1994.A device for tuning a combiner filter. The measuring signals (Prl . . . Prn, PF1 . . . PFn) of a number of different combiner filters are multiplexed to the same detectors. Multiplexing allows the measuring and adjusting electronics required by the tuning and adjusting means of combiner filters to be simplified considerably especially with a high number of combiner filters. Multiplexing of measuring signals is used primarily to select the sample signals of the forward and reflected power of one and the same combiner filter to be tuned for the measuring electronics. In the invention selectors for reflected power and forward power are independent of each other, which allows isolation measurement between different channels. The sample signal of the forward power of one combiner filter and the sample signal of the reflected power of another combiner filter are thus connected to the measuring electronics. When both sample signals undergo frequency-selective detection at the same frequency, the degree of isolation between the radio channels will be determined.
FI925956A 1992-12-30 1992-12-30 Apparatus for tuning a combiner filter and a method for performing a separation measurement FI94690C (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
FI925956A FI94690C (en) 1992-12-30 1992-12-30 Apparatus for tuning a combiner filter and a method for performing a separation measurement
EP94902794A EP0647373B1 (en) 1992-12-30 1993-12-29 Device and method for tuning a combiner filter
PCT/FI1993/000567 WO1994016497A1 (en) 1992-12-30 1993-12-29 Device and method for tuning a combiner filter
AT94902794T ATE170346T1 (en) 1992-12-30 1993-12-29 APPARATUS AND METHOD FOR TUNING A MIXER FILTER
JP06515712A JP3078839B2 (en) 1992-12-30 1993-12-29 Apparatus and method for tuning combiner filters
US08/295,665 US5525940A (en) 1992-12-30 1993-12-29 Device and method for tuning a combiner filter
AU57013/94A AU674375B2 (en) 1992-12-30 1993-12-29 Device and method for tuning a combiner filter
DE69320636T DE69320636T2 (en) 1992-12-30 1993-12-29 DEVICE AND METHOD FOR TUNING A MIXER FILTER
NO943192A NO306889B1 (en) 1992-12-30 1994-08-29 Device for controlling a combination filter, and method for isolation measurement on radio transmitters

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI925956 1992-12-30
FI925956A FI94690C (en) 1992-12-30 1992-12-30 Apparatus for tuning a combiner filter and a method for performing a separation measurement

Publications (4)

Publication Number Publication Date
FI925956A0 FI925956A0 (en) 1992-12-30
FI925956A true FI925956A (en) 1994-07-01
FI94690B FI94690B (en) 1995-06-30
FI94690C FI94690C (en) 1995-10-10

Family

ID=8536491

Family Applications (1)

Application Number Title Priority Date Filing Date
FI925956A FI94690C (en) 1992-12-30 1992-12-30 Apparatus for tuning a combiner filter and a method for performing a separation measurement

Country Status (9)

Country Link
US (1) US5525940A (en)
EP (1) EP0647373B1 (en)
JP (1) JP3078839B2 (en)
AT (1) ATE170346T1 (en)
AU (1) AU674375B2 (en)
DE (1) DE69320636T2 (en)
FI (1) FI94690C (en)
NO (1) NO306889B1 (en)
WO (1) WO1994016497A1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI93064C (en) * 1992-12-30 1995-02-10 Nokia Telecommunications Oy Method and arrangement for controlling a bandpass filter, especially a com- puter filter
JP2728018B2 (en) * 1995-04-18 1998-03-18 日本電気株式会社 Transmission circuit
FI107766B (en) * 1998-01-28 2001-09-28 Nokia Networks Oy Reconciliation procedure and transceiver unit
SE0004481D0 (en) * 2000-12-05 2000-12-05 Ericsson Telefon Ab L M A method and a device for tuning a cavity channel filter combiner
SE519892C2 (en) * 2000-12-15 2003-04-22 Allgon Ab A method of tuning a radio filter, a radio filter and a system comprising such a radio filter.
WO2003034715A2 (en) * 2001-10-16 2003-04-24 Rfstream Corporation Monolithic integrated circuit for a television receiver
US7199844B2 (en) * 2002-05-28 2007-04-03 Rfstream Corporation Quadratic nyquist slope filter
US6750734B2 (en) * 2002-05-29 2004-06-15 Ukom, Inc. Methods and apparatus for tuning an LC filter
US7116961B2 (en) * 2002-05-29 2006-10-03 Rfstream Corporation Image rejection quadratic filter
WO2003103143A1 (en) * 2002-05-29 2003-12-11 Ukom, Inc. Methods and apparatus for tuning using successive aproximation
WO2003105464A2 (en) * 2002-06-05 2003-12-18 Ukom, Inc. Quadratic video demodulation with baseband nyquist filter
US6882245B2 (en) * 2002-06-05 2005-04-19 Rf Stream Corporation Frequency discrete LC filter bank
US20050012676A1 (en) * 2003-07-16 2005-01-20 Mccarthy Robert Daniel N-port signal divider/combiner
US6940365B2 (en) * 2003-07-18 2005-09-06 Rfstream Corporation Methods and apparatus for an improved discrete LC filter
WO2006099161A2 (en) * 2005-03-11 2006-09-21 Rfstream Corporation A mosfet temperature compensation current source
WO2006099071A2 (en) * 2005-03-11 2006-09-21 Rfstream Corporation A wideband tuning circuit
US7446631B2 (en) * 2005-03-11 2008-11-04 Rf Stream Corporation Radio frequency inductive-capacitive filter circuit topology
DE102009018648B4 (en) * 2009-04-23 2018-11-29 Snaptrack, Inc. Front end module with antenna tuner
US9136825B2 (en) * 2012-06-13 2015-09-15 Nokia Technologies Oy Method and device for implementing tracking filters and RF front end of software defined radios
US9136815B2 (en) 2012-06-13 2015-09-15 Nokia Technologies Oy Methods and apparatuses for implementing variable bandwidth RF tracking filters for reconfigurable multi-standard radios
US9407482B2 (en) 2013-11-11 2016-08-02 Nokia Technologies Oy Tunable RF N-path filter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715690A (en) * 1971-05-18 1973-02-06 Trw Inc Automatic tuning electric wave filter
US4726071A (en) * 1984-12-31 1988-02-16 Orion Industries, Inc. Microprocessor controlled self-tuning resonant cavity and method
SE467717B (en) * 1990-12-21 1992-08-31 Ericsson Telefon Ab L M PROCEDURE FOR FINISHING THE RESONANCE FREQUENCY FOR A FILTER IN A COMBINER
FI87864C (en) * 1991-05-09 1993-02-25 Telenokia Oy ANCHOR OVER FOER FARER REGLERING AV ETT BANDPASSFILTER, SAERSKILT ETT COMBINATOR FILTER

Also Published As

Publication number Publication date
EP0647373A1 (en) 1995-04-12
AU5701394A (en) 1994-08-15
FI94690B (en) 1995-06-30
AU674375B2 (en) 1996-12-19
NO943192L (en) 1994-10-28
WO1994016497A1 (en) 1994-07-21
NO306889B1 (en) 2000-01-03
DE69320636T2 (en) 1999-02-11
ATE170346T1 (en) 1998-09-15
JP3078839B2 (en) 2000-08-21
EP0647373B1 (en) 1998-08-26
FI925956A0 (en) 1992-12-30
FI94690C (en) 1995-10-10
JPH07504557A (en) 1995-05-18
NO943192D0 (en) 1994-08-29
DE69320636D1 (en) 1998-10-01
US5525940A (en) 1996-06-11

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